IronMac
Jan 19th, 2007, 05:23 AM
It looks like the only lunatic fringe in the global warming debate will be those who say that humans do NOT cause global warming.
http://www.thestar.com/News/article/172778
Key points include:
observations of temperature increases and shrinking ice cover, "support the conclusion that it is extremely unlikely that global climate change of the past 50 years" was caused by solar flares or other natural events.
The current carbon level is about 380 parts per million and rising steadily, compared with 280 at the time humans began burning large amounts of coal, oil and other fossil fuels.
"Values higher than 4.5 C cannot be excluded" because of "feedbacks," such as the increased ability of the atmosphere to absorb water vapour – an extremely potent greenhouse gas – as it heats up, and the greater warmth absorbed as Arctic ice melts.
http://www.thestar.com/News/article/172778
Key points include:
observations of temperature increases and shrinking ice cover, "support the conclusion that it is extremely unlikely that global climate change of the past 50 years" was caused by solar flares or other natural events.
The current carbon level is about 380 parts per million and rising steadily, compared with 280 at the time humans began burning large amounts of coal, oil and other fossil fuels.
"Values higher than 4.5 C cannot be excluded" because of "feedbacks," such as the increased ability of the atmosphere to absorb water vapour – an extremely potent greenhouse gas – as it heats up, and the greater warmth absorbed as Arctic ice melts.